:root { --fg: #1a1a1a; --muted: #666; --bg: #fafafa; --card: #fff; --line: #e5e5e5; --accent: #2457ff; }
@media (prefers-color-scheme: dark) {
  :root { --fg: #eee; --muted: #999; --bg: #111; --card: #1a1a1a; --line: #2a2a2a; --accent: #7a9cff; }
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, sans-serif; color: var(--fg); background: var(--bg); line-height: 1.5; }
header { display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.5rem; border-bottom: 1px solid var(--line); }
header a, header button { color: var(--fg); text-decoration: none; font: inherit; }
header button { background: none; border: 1px solid var(--line); border-radius: 6px; padding: .25rem .75rem; cursor: pointer; }
.brand { font-weight: 600; }
main { max-width: 800px; margin: 0 auto; padding: 2rem 1.5rem; }
.cards { list-style: none; padding: 0; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.cards a { display: block; padding: 1rem; background: var(--card); border: 1px solid var(--line); border-radius: 10px; color: inherit; text-decoration: none; }
.cards a:hover { border-color: var(--accent); }
.cards h2 { margin: 0 0 .25rem; font-size: 1.1rem; }
.cards p { margin: 0; color: var(--muted); }